ON THE BRINK: Sanchez's move to Arsenal should be finalised within 24 hours [GETTY]

The Chilean is heading to London today to undergo a medical before putting pen to paper on a £135k-per-week deal.

That pay packet will make him the club's joint-highest paid player alongside £42m German ace Mesut Ozil.

Spanish newspaper Marca reported yesterday that Sanchez had a passed a medical, however, Starsport understands that is yet to place, with the club set to put the player through TWO medical examinations.

One will take place today, with the other scheduled for tomorrow. If all goes to plan, the club hope to unveil Sanchez before the weekend.

The Chilean has cut short his summer holiday to fly to London, but he is not expected to join up with the rest of the Arsenal squad for pre-season training on Monday, after only recently returning to Europe after featuring for his country at the World Cup.